Journal of agriculture & life science (농업생명과학연구)

Institute of Agriculture & Life Science, Gyeongsang National University (경상대학교 농업생명과학연구원)
권호 표지

Effects of Harvest Time and GA3 Treatment on the Germination Rate of Pennisetum alopecuroides for. erythrochaetum

채종 시기 및 GA3 처리가 적수크령 종자의 발아율 향상에 미치는 영향

  • 임채신 (경상남도농업기술원) ;
  • 오주열 (경상남도농업기술원) ;
  • 석용철 (경상대학교 대학원 응용생명과학부(농업생명과학연구원)) ;
  • 김도한 (경상남도농업기술원)
  • Received : 2010.07.22
  • Accepted : 2010.12.17
  • Published : 2010.12.31
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Abstract

This experiment was conducted to enhance horticultural utilization value of wild graminaceous species on rooftop gardening purpose. Seeds of Pennisetum were harvested 5 times at an interval of 2 weeks from 2 October to 25 November in 2008. Seeds were soaked into solution of $GA_3$ different concentrations and incubated at the condition of $20^{\circ}C$ and $25^{\circ}C$ each for 12 hrs. Germination rate of the after-ripening seeds was above 80% in the 17 and 31 October and 13 November harvest, but germination rate of seeds harvested in the 2 October and 25 November was below 70%. Fresh seed germination and early growth of shoot and root after germination were promoted by $GA_3$ treatment. Effect of $GA_3$ treatments on germinability of fresh seeds was more prominent in the seeds harvested on 2 October and 25 November.

본 실험은 하천과 벽사면의 녹화에 이용되는 벼과 식물 중 적수크령을 대상으로 채종시기와 식물생장 조절물질인 $GA_3$ 처리가 발아율 향상에 미치는 영향을 조사하여 적정 채종시기와 $GA_3$ 농도 및 침지시간을 구명하고자 수행되었다. 채종 기간은 2008년 10월 2일부터 동년 11월 25일까지 2주 간격으로 5회 채종하였다. 채종된 종자의 저장 및 관리는 수확 후 채종된 순서대로 $5{\pm}1^{\circ}C$의 항온기에 밀폐하여 보관하였다. 저장된 종자의 후숙은 $41{\pm}3^{\circ}C$ (R.H.=70%) 항온기에서 96시간 처리하였다. 수크령 종자의 발아율, 평균발아일수 및 $GA_3$ 처리에 따른 결과는 침지시간에 따른 효과가 나타났고 채종시기는 10월 중순에서 11월 중순경에 채종되는 수크령 종자가 발아율에 더 효과적이라 판단되었으며, 본 실험을 통해 수크령 종자의 발아성을 향상은 물론 녹화용에 이용되는 수크령의 원예적 이용가치를 높이는데 도움이 될 것으로 보여진다.

Keywords

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